1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package android.app;
17
18/**
19 * Listens to VR Mode state changes. Use with methods in {@link VrManager}.
20 *
21 * @hide
22 */
23public abstract class VrStateCallback {
24
25    /**
26     * Callback triggered when there is a change to Persistent VR State.
27     *
28     * @param enabled True when VR State is in persistent mode, false otherwise.
29     */
30    public void onPersistentVrStateChanged(boolean enabled) {}
31
32    /**
33     * Callback triggered when there is a change to Vr State.
34     *
35     * @param enabled True when VR State is in VR mode, false otherwise.
36     */
37    public void onVrStateChanged(boolean enabled) {}
38}
39